Cabinet for phonographs and talking-machines



R. R. M. HALL. CABINET FOR PHONOGRAPHS AND TALKING MACHINES.-

APPLICATION FILED DEC. 14, I918.

Patented Nov. 9, 1920.

1,358,55AQo UNITED STATES ROB ROY M, HALL, OF IDITAROD, TERRITORY OF ALASKA.

CABINET FOR PHONOGRAPI-IS AND TALKING-MACHINES.

Specification of Letters Patent.

Patented Nov. 9, 19.20..

Application filed December 14, 1918. Serial No. 267,092. 4

T 0 all whom it may concern:

Be it known that 1, Ron Roy M. HALL, a

a new and useful Cabinet for Phonographs and Talking-Machines, of which the followin is a specification.

l ly invention relates to cabinets, and more particularly to cabinets used for phonographs and talking machines, and has for an object to secure the most desirable results of sound and tone in the use of talking machines.

Another object is to produce a cabinet which can be used with the conventional talking machines that will improve the functions of the talking machines.

With these and other objects in view, my invention consists in certain features of construction, combination and relative arrangements of parts as will be hereinafter fully described and pointed out in the claims. reference being had to the accompanying drawing, in which:

The figure is a vertical section through a.

cabinet embodying my invention, as though one side were removed.

Referring more specifically to the drawing, A represents the upper section of a horn which flares in fiat planes downwardly to the point B where the side walls of the horn are connected to or coalesce with the side walls and the rear wall connects or coalesces with the rear wall of the cabinet.

The lower eudof the front wall of the horn section A is supported on and connectedto a supporting cross bar G which extends from side wall to side wall.

From point B. M. G. the width of the horn is the width of the cabinet, and the backbone board F is alsov the same width as that of the cabinet, that is, the backbone board F extends from side wall to side wall.

Extending upwardly and outwardly on a curve from the upper end of the backbone board F is the sounding board terminating at E which is the top of the opening from which the sound flows.

The second section of the horn consists of the lower curved sounding board which extends from the cross bar G to the point C, I

the lowermost portion being located a slight distance above thefloor of the cabinet, the

sides of the lower or second section being backbone board F, the upper curved board E, and side walls of the cabinet and the front wall of the cabinet from C to D.

H represents the conventional spring m0- tor used to drive the turntable I, and J is a sound box or reproducer, K being the tone arm thereof. Connecting the tone arm with the beginning of the wooden horn A is a tube L.

The curved sounding boards used in my construction are placed in position under tension, that is to say, they are forced into place while shaped to a considerably wider arc than that which they form when in place; this construction and manipulation causes them to be very vibrant and have a marked effect on the tone volume and quality.

By the construction and arrangement of parts it will be understood that I utilize the side and front walls of the cabinet itself to form the side walls of the horn section,

flat, the cross sectional area will be rectan gular with the sides of the cabinet constituting the side walls of the horn and thefront wall of the cabinet constituting an integral part of the final or amplifying sec- 'tion of the horn.

From the construction and arrangement of parts as hereinbefore set forth it will be evident that a horn or tone amplifier, or amplifying chamber of very large size is se cured without increasing the size of the cabi' net. It will further be evident that the enhanced tone values are due to the curved sounding boards at top and bottom of the cabinet, and which are under tension and consequently very vibrant.

The construction just set forth is of par} ticular value for out door work, for use in large rooms or public places, and especially to provide music foridancing, and that for indoor use, where a soft tone is desired, the tonal volume can be lessened by the use of fiber or other soft tone needles.

I claim-,- 1. A phonograph cabinet including top,

outlet openings, respectively, a horn member comprising oppositely disposed chambers within the cabinet, said chambers communicating with said inlet and outlet openings respectively, one chamber of the horn having vibrant front, rear, and side walls free from the cabinet, the other chamber having front, and side walls constituting the front and side walls of the cabinet, the bottom wall of the first mentioned chamber constituting a communicating branch between the two chambers.

2. In a talking machine, the combination with a cabinet, of a transversely rectangular sound amplifying device consisting of a horn comprising oppositely projecting chambers, the initial or inlet chamber projecting vertically downward into the cabinet and the secondary or outlet chamber having reversely curved upper and lower sounding boards, the front and side walls of the said outlet chamber coinciding with the front and side walls of the cabinet.

3. In a talking machine, the combination with a cabinet, of a hollow amplifying body within said cabinet, said amplifying body having a rectangular transverse section and including a primary hollow section flaring downwardly and contacting with the rear and side wallsof the cabinet, an intermediate hollow section comprising a curved bottom sounding board spaced from the bottom of the cabinet, the side walls of the cabinet coinciding with the side walls of the said intermediate section, an outlet or final section, comprising an upper curved sounding board, a rear Wall, side walls and front wall, the side and front walls of the cabinet constituting the side and front walls of the said outlet section.

4:. In a talking machine, the combination with a cabinet, of a sound amplifying device comprising a horn section adapted for connection with the reproducer, said section having fiat downwardly flaring walls and having a rectangular cross section, said flaring walls merging with the side walls of the cabinet, an arcuate sound board under tension and supported forming a continuation of the first mentioned section and merging with the front wall of the cabinet, the side walls of the cabinet coinciding with the side walls of the sound board section, a backbone board supported adjacent the front wall of the flared section, and extending the width of the cabinet, an upper arcuate sounding board under tension supported on its lower end on said backbone board and by the front wall of the cabinet at the upper wall of an opening in said front wall, the side walls of the cabinet coinciding with the side walls of the last mentioned sound board section, and the front wall of the cabinet constituting the front wall thereof.

5. In a talking machine the combination with a cabinet, of a transversely rectangular sound amplifying device consisting of a horn comprising oppositely projecting chambers, the initial or inlet chamber proj ecting vertically downwardly into the cabinet and the secondary or outlet chamber having reversely curved upper and lower sounding boards, the side walls of the said outlet chamber coinciding with the side walls of the cabinet.

R. M. HALL. 

